Dumber Mini black screen defect fix

Use this fix if after unlocking the phone the screen stays black, although the screen and keypad backlights are on.

1. Download the following program to a Windows computer: http://ota.dumbermini.com/dumberos_black_screen_fix.exe
   
2. Run the program.
   
3. You should see a black window with some text, at the bottom it should say "Search usb, timeout set as 120000 ms".
4. Turn off your phone, connect it to the computer with a USB cable (don't connect it before running the program).
5. You should see messages about downloading images and data being sent.
6. When you see "Flashing complete! Press any key to continue", the update has completed, you can turn on the phone if it hasn't by itself.